HMRC to Begin Issuing £100 Fines as Self-Assessment Deadline Approaches Friday, January 16, 2026 hmrc selfassessment taxreturns fines deadline selfemployed taxpenalties childbenefit incometax taxhelp HM Revenue and Customs (HMRC) is set to start issuing £100 fines in just two weeks to those who miss the self-assessment tax return deadline. Millions of self-employed individuals and higher earners across the UK are urged to … Read More